// JavaScript Document
//js实现的java---Map
function Map() {
    this.container = {};
}      
   
//将key-value放入map中     
Map.prototype.put = function (key, value) {
    try {
        if (key != null && key != "") {
            this.container[key] = value;
        }
    }
    catch (e) {
        return e;
    }
};      
   
//根据key从map中取出对应的value     
Map.prototype.get = function (key) {
    try {
        return this.container[key];
    }
    catch (e) {
        return e;
    }
};      
   
//判断map中是否包含指定的key     
Map.prototype.containsKey = function (key) {
    try {
        for (var p in this.container) {
            if (this.p == key) {
                return true;
            }
        }
        return false;
    }
    catch (e) {
        return e;
    }
};     
   
//判断map中是否包含指定的value     
Map.prototype.containsValue = function (value) {
    try {
        for (var p in this.container) {
            if (this.container[p] === value) {
                return true;
            }
        }
        return false;
    }
    catch (e) {
        return e;
    }
};      
   
   
//删除map中指定的key     
Map.prototype.remove = function (key) {
    try {
        delete this.container[key];
    }
    catch (e) {
        return e;
    }
};      
   
//清空map     
Map.prototype.clear = function () {
    try {
        delete this.container;
        this.container = {};
    }
    catch (e) {
        return e;
    }
};      
   
//判断map是否为空     
Map.prototype.isEmpty = function () {
    if (this.keyArray().length == 0) {
        return true;
    } else {
        return false;
    }
};      
   
//获取map的大小     
Map.prototype.size = function () {
    return this.keyArray().length;
};     
   
//返回map中的key值数组     
Map.prototype.keyArray = function () {
    var keys = new Array();
    for (var p in this.container) {
        keys.push(p);
    }
    return keys;
};     
   
//返回map中的value值数组     
Map.prototype.valueArray = function () {
    var values = new Array();
    var keys = this.keyArray();
    for (var i = 0; i < keys.length; i++) {
        values.push(this.container[keys[i]]);
    }
    return values;
};